Lock



L. RZEPKA;

LOCK.

APPLICATION FILED NOV. 2,1 92l.

: 43 8,140 I Patented Dec. 5, 1922.

2 SHEETSSHEET I. F 2 1- provernents in Locks, ing is a speclficat'lonf Patented Dec. 5,

l Application fi'ieii novemt-er 2, 1921.1 Serial'No. 512,282.

To all whom-it concern: 1

' Be it knownthat I, LUDWIK RZEPKA; a

citizen of Poland, residin at Ghicag in the county of Cook and tatecf'Illinois, have invented certain 'new and useful Imof-wh'ich' the follow- This inventionrelates to certain new and i useful improvementsin locks and has par ticular reference to a'lock especially'de signedfor doorswherein a pairofindepend i e'n'tly operable latch bolts areyprovided for retaining the door in lockedcondition; 'A further object oftlie'invention has ref-f erenc'e to-a door lock wherein a pair of tensioned latch bolts is contained within the lock casing 'withme'ans associated with the bodies in a door lock,-a'-pairof tensionedj of the doorknob.

latch bolts for moving the ,same to a posi tion to'per'rnit opening movement of the door. A stillfurtherobje'ct ofthe invention emlatch- -bolts, one of the latch bolts being moved to a retractediorinoperative ,position and s0 retained under control of a key-while the other latch bolt may be employed inthe usual manner and ioperfable by the spindle Withthe above general objects in View; and others that'willappear as the-nature of the invention is better understood, the

"" same consists of the novel form, combinaofa portionof adoorand fran1e showingthe mechanism of the lock'with the cover of the lockcasing renioved'ythe lock being illustrated in locked condition,

Figure 4 is a top plan View of the lock casing'with' the cover removed; similar to i Fig. 3"showing one of thelatch bolt traicted, i I

1F igure 5 is a plan view similar to Fig. 4 showing the two latch boltsretracted,v

Figure 6 is a detail sectional view of -"a' portion DW 'K nznrxn or dfiIoAGoJLL I vors;

' Figure 7 is a detail sectional view taken onwli'ne VII VII of'Fi'gl 6' showin thei iectangular portion ofthe knob spin Figure 8 is a detail sectional view -taken ofsthe lock" casiiig 1 online VIII-4 in of FiguSL'ShoWi-ngthe circular portion of theik-nobspindleand theoperating arm-for shifting one 'ofathe' latch bolts, 1 Figure 9 lever plate of the locktmechanism Figure 1 1 is a perspective view :of'one of. the catch-levers,.andw

g is a detail -ide -lvacidiiai aw, partially n section, of the.

FigurelQ is-a side elevational view-of -the y I key for operating the lockimechanism." Br efly described, present invention refers t-ola'door lock embodying a pair of tensioned bolts, eachihavingz'a' hook-shaped l 1 extension carriedthereby.

ciated' with a barrel or" bearingqhaving op positely directedarmszfor eng tensions to shift 'the' latch" bolts" against spring tension thereon vices contained within the lock casing; are adapted to be moved intoxe'ngagement with one of the latch boltiextensions for holding the latch'bolt carryingsaid extension in an open position so'that the othenarinbperated 1' by the spindle may engage the other latch bolt extension for operating the latterinthe:

usualmanner of a latch bolt;

Referring more in detail to the H y knobf s'pindle {f' pro ect1ngthroughthe lockcasing is: asso- 8O 1 I agingthe-ex Key operated 'de panyingf drawing the door lock is associated 10 with a door l and a frame 2,the frame has:

ing a cutaway portionin the edge thereof. to accommodate the socketeol keeperi3' whileythe lockrcasing-is-countersunk within the door as shown 1n.F1g.-I3. i

The'look cas ingembodiesa i sidewalls 5 and-6 and upper and lowerwalls Q 7 and 8 respectively, "a cover plate 9 shown in Fig; l"'being associated with the lock case;

ing and secured there'to infany suitable man-p ner. Frame bars '10', l lfand 12 of angle for-' mation feiz'tend betweenthe upper andzlower. walls 7 andS as clearlyshown.in Figs. 3, 4-

and5, the bar 10 constituting guidesfo-r the latch bolts 13' and "14' having'latch heads 15",

coil springs 16 surrounding-"the latch bolts heads15, normally toprojecttheheads of I 13 and 14 between the bar 10wand= the latch the latch bolts outwardly "ofthe lock. casing v 13 and-(-144embodies ai wall 5,1. The, inner end of the bolt 13 carries a lateral angle extension 17 terminating in an inwardly directed hook 18, while the inner end of the latch bolt 14 carries a laterally directed angular extension 19 terminating in an inwardly directed hook 20 opposite to the extension hook 18, the Sid leg 21con- 26; carried by: each, end thereof, the knob spindle extending through the walls of the lock casing intermediate the extension hooks 18 andh20,.; Qperat-ing arms for the latch bolts are carried by the knob spindle, the operating, arm 26: s'ecuredto the rectangular portion of the knob spindle for engagement withxthe ex-' tension-hook 18-whi1e the arm. 28v carried by the hub portion 29 has a pawl and ratchet connection 30-with the cylindrical portion of the knob spindle, the arm 28 being 9 adapted fori engagement with the extension hookl'20. 71

Insliding the latch bolts 13 and 14: the

' arm 26: carried by the knob spindle-is first moved into engagementxwith the extension hook 18 to shifti the same to the dotted line positionilhistrated in Fig. 3, atvw-hich time the arm 28 will be moved into engagement with the extension 19 of the latch bolt 14 to cause the same .tomove relative to the cylindrical-portion'25 of the knob spindle vand dispose the same; in an angular relation with respect: to; the arm 26. Upon releasing'the.

' pressure on the knob spindle the spring 16',

upon the latch bolt 13 will again progect the head 15 of'said latch bolt andmovement of the .knob spindle in theropposite direction will-"cause. the arm-:28 toengage the extension hook 20 to move the same to the position to a pin carried by shown in" Fig, 4.-

To hold thelatchbolt;v 14 retracted in the position shown in Fig. 4, in t-heinitialloporation of the lock adog 31 pivoted as at 32 the bottom wall 4 of the casing. and tensioned by the spring133 is en'- gagedbythe cam 34 operated by, the knob 35"to. move the hook extension 36:.of thedog 31. intoengagement withthe shoulder 32 of the extension arm 21, the cam being then disengaged from the dog and the frictional engagement between the dog, and arm shoule der 22: beingmaintained against the tension. ofthe spring 33. Inv orde'rnto hold the latchlbolt 11' retracted and in an unlocked condition,- key operated devices containedwithin the look casing are moved into engagement with the 1 2;. pluralityv beingcarried by a hub 27 v extension arm 19 of the latchb olt 14 and the bar 10 of the lock casing, these devices including a lever plate 37 having an arm extension'38- provided with an opening 39 in the end thereof for pivotal mounting upon the pin 40 carried by the frame bar of catch levers 40 of the form shown in detail in Fig. 11 having openings 41 are pivota lly supported upon the rinna p j ing perp ndi ular y; ro he leverp a E ch t h, 6 19 r es. r arw dlyi lireet a 911. 9

dj ent: h e end th f vitl as eew 44 in the outer face of thejshoulder while a hook extension 45 projects from the oppew site side ofjthe catch lever. adjacent; the shoulder 43,. v The opposite end of the catch lever-isprovided. with a terminal substan 1y s ape mews .45, teemi g m nd hook 46, The catchtlevers 4Q pivotally sup; ported on. the pin 4201? the, lever plat 37 are separately tensioned by spring wires 47 having do uble coils48 and,49,the coil 48 being associated with theU-shaped support 50 while thecoil 49 is receivedonthe P h pp r ,;a d the 1 1 1.51; e: ing carried. y e. ever, plate he catch levers being under tension, the same have the hookextensions 45 thereof moved into engagement with-the pin 52 carried by: thelever plate 37;, the springs 41 engaging in h hQu1der-sr es 4 A, k y;- f as type shown in Fig-12 having a stemt 53 and a blade 54 having, wards, 55 is inserted through the keysopening 56 in the opposite sides of the lock casingwith the walls of the key hole of a likeconf -igurat-ion 'toathe blade: of the; key. By rotating" the key in the proper direction, with the leverplate and. catch levers, in; the position sho wn in into engagement; with thehookextensions 45. of the catch levers, the key shifting the catch levers to displace the engagement -bewee the! e e se sef and he orner of the frame bars 10, and 11 against the tGIlSiODnOf the springs; 41. Continued move ment; of thehkey, causes the same toengage the lower edge 51 oi the leverplatef3T-to shift the lev plate .901 ni otedr 40' causing the, nose 58 of thelever plate. to move into en-gagement with the inclined cam face23 of the latch bolt extension- 19 and further causing an engagement be; tween the inner faces of, tl e catch levers; 40 and the sid dface; of theg frame bar 19., During this. movement the I causes a. slight movement of the .latch-, bolt 14 to relieve,the frictional engagement between the dog31 andthe shoulder 22, per mitting the spring 33 to disengage thedog froni the shoulder, while I thesprings 47 maintain engagement between the leverplate and the 'laijfifihf bolt extension. 19,, and between catch levers 40 and the frame bar Figs 3 n 4 he deeft k y sm v d;

lever I plate,

"r the latch bolt 13 to operate in the usual manner by the-arm 26,engaging the exten-.

engaging said extension, a lever plate moved 10.2.1 In this position the latch .bolt l l-is locked in a retracted position, permitting sion hook 18. .When it isdesired to .release the: latch bolt 14 to permit the same to .be projected in the casing for reception in the keeper 3 as shown in Fig. 3,.the arm.

28 'is'movedtoengage the hook 20 of the latch bolt extension 19, a slight movement of the hook 20 relieving. thefrictional engagement between the nose 58 of the lever plate and the camshoulder 23 01. the latch bolt extension, at which time the springs 47 will function to lower thelever plate and disengage the catch levers from the frame bar 10, thecatch levers returning to the position shownin Figs. '3 and 4 with the hooks 46. engaging the frame bar 10 and be-. ing further-limited in-their movement by the hooks 45 engaging the pin 52. I

I A' slidinglockflbolt 59 positioned in the casing and guided by the frame bar 12 has ating in the usual manner of a latch bolt,

for doors to control the opening and-closing movement thereof, and while there is herein shown and described the preferred embodiment of the present invention it is nevertheless to be understood that minor changes may be made therein without de-,

parting from the spirit and scope of the invention.

What is claimed as new is 1. A lock of the type described compris ing a casing, a pair of tensioned latch bolts slidably mounted therein, means for shifting thelatch bolts, means for holding one of said latch bolts in a retracted position',;

said means including an extension carried by the last named latch bolt, a dog primarily A engaging said extension, and a lever plate moved to engagement with said extension and disengaging the dog therefrom for returning the latch bolt to its operative posi-.

tion.

2. A look of the type described comprising a casing, a pair of tensioned latch bolts slidably mounted therein, means for shifting the latch bolts, means'for holdingone of said latch bolts in a retracted position, said means including an extension carried by the last named latch bolt, a dog primarily slidably mounte v g thelatch bolts, means for holding onehof said ing the framebanf I the latch bolt toits operative position, a

frame bar within the oasing,q,and 'cat'ch.. levers carried by the leverplate for engag ing the frame bar.

to, engagement with saidextension and dis- I engaging thecdog therefrom for returning A look of the type described ing a casing, a pair. of tensione'd lat ch bolts i latch bolts in a retracted position, said means atherein,means forshifting v includinggan extension carried 1 bythe jlast named latch bolt.,,a-dog primarily engaging said extension, a lever-plate moved to enf gagement withv said extension and disengaging the dog therefrom for. returning the:

latchbolt to itsoperative position, a framebar within the casing, and .tensioned x cat c hz levers carried by the lever plate for engag-j 'T "4101 3 5' -14. A' lock of the type describedcomprising a casing, a pair of .tensioned latch bolts. slidably mounted therein, meansfor shifting I the latch bolts, means for holding one-ofsaid latch bolts in a retracted position, said means including an extension carried by the last named latch bolt, a dog primarily engaging said extension a lever plate moved toen-J gagement with said extension'and disengaging the dog therefrom for returninggthe latch boltto it's operativeposition,w afframe bar withintheca'sing, catchlevers carried-by the lever platefor engaging the frame bar,

and means for moving thelever'plate into engagement with the extension.

5. A lock of the type described comprising a casing, a pair'of tensioned latch bolts slidably mounted therein, means forshifting the latch bolts, means for holding one of said latch bolts in a retracted position, said means including an extension" carried by the last f named latch bolt, a dog primarily engaging said extension, a lever plate moved to en-* gagement with said extension and disengag ing the dog therefrom for returning; the

bar withinthe casing, tensioned catch levers carried. by the lever plate for engaging the framebar, and means for movingthe lever plate into engagement with the extension.

6. A lock of the type described comprislatch bolt to its operative position, a frame 7 ing a casing, a pair. of tensioned latch bolts slidably mounted in the casing. lateralextenl sions carried by the'la'tch bolts and each having an inwardly directed hook at the free ends thereof, a knob spindle journaled intermediate thehooks, and lateral arms carried 1' by the knobspindle for alternately engaging said hooks to shift the latch bolts.-

7.- A look of the type described comprising. a casing-a pair of-tensioned latch bolts fslidably mounted inthe casing, lateral extens sions carried by the latch bolts and eachhavends thereof, a knob spindle journaled intering an inwardly directed hook'at the free mediate the hooks, lateral arins carried by the knob spindle for alternately engaging said hooks toshit't the latch bolts, and means associated With one of said bolt extensions lor'holding the same in a retracted unlocked positi on '8. A lock of the type described comprisin'g'a seeing, a pair of tensioned latch bolts slidably mounted in the casing, lateralIeXtensions carried by the latch bolts and each having an inwardly directed hook at the free ends thereof, a 'lifi ob spindle jeurnaled intermediate the hooks, late arms carried by the knob spindle for alternately engagin said hooks to shift the latch bolts, means associated with one of said bolt extensions for holdingthe same in a retracted unlocked position, said means including a lever plate pivoted in the casing,tensioned catch levers carried by said plate, and means-engaging the catch levers and lever plate to -inove the same into engagement With said extension.

"9. A'lock of the type described comprising a casing, a pair of tens, ed latch bolts slidably mounted in the casing, latex-ail extensions carried by thelatch bolts and each having an inwardlydirezted hook at the free ends thereof, a knob spindle journaled intermediate the hooks, lateral arms ce ed by the knob. spindle for alternately engaging said hooks to shift the latch bolts, means asso-- ci'ated'vvith one of said bolt extensions for holding I the same 1 in a retrttcted unlocked position," said 111621 118 including a lever plate pivotedin the casing, tensioned'catch levers carried by said plate, ineans engagingthe catch levers and lever plate to In'ove'the same into engagement with said extension, and means for holding said-"extension in a position to be engaged by saiddever lplazte an'd thereafter freed from engagement with said extension. T

10 A lock ofthe" type-described compris a casing, a pairoftensioned latch bolts slida'bly niotin'te'd the casing, laiter'ahentensions carried by thelatchbolts an d eachhaving an inwardly direct-ed hook at the free ends thereof, aknobspindle journaled intermediate the hooks, lateral arms carriedby the knob spindle for alternately engaging said hooks to shift the latch bolts means assoelated with one of said b' o'l t extensions for holding the same in a-ret'raicted unlocked position, said means including i a lever {plate pivoted in the casing, tensioned catch levers carried by said plate, ine'an's engaging' -the catch levers and lever plate toinove the same into engagement with said extension, n'ieans for ho ng said extension in'a position'to be' engaged by'sa-id le ver plate and='tliere'after freed from engagement With said extension, and asliding lock bolt withinthe casing.

ln testimony whereof I" affix my signature. 

